65713851 has 18 divisors (see below), whose sum is σ = 110417892. Its totient is φ = 37550520.

The previous prime is 65713777. The next prime is 65713867. The reversal of 65713851 is 15831756.

65713851 is a `hidden beast` number, since 6 + 571 + 3 + 85 + 1 = 666.

It is not a de Polignac number, because 65713851 - 2¹⁰ = 65712827 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (65713751) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 74065 + ... + 74946.

Almost surely, 2^65713851 is an apocalyptic number.

65713851 is a deficient number, since it is larger than the sum of its proper divisors (44704041).

65713851 is a wasteful number, since it uses less digits than its factorization.

65713851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149031 (or 149021 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 65713851 is about 8106.4080208191. The cubic root of 65713851 is about 403.5391171890.

It can be divided in two parts, 65713 and 851, that added together give a square (66564 = 258²).

The spelling of 65713851 in words is "sixty-five million, seven hundred thirteen thousand, eight hundred fifty-one".